No.1 Neuroscientist: Why You Should Always Look Into Someone’s Left Eye! & How Stress Leaks Through Skin, Is Contagious & Gives You Belly Fat! Dr. Tara Swart
Dr. Tara Swart, a neuroscientist, medical doctor, executive advisor, and author, discusses building mental resilience and overcoming challenges. She explores the brain-body connection, stress contagion, neuroplasticity, and leveraging ancient wisdom for well-being and personal growth.
Deep Dive Analysis
18 Topic Outline
Stress Contagion and Its Physical Impact
Brain-Body Connection and Stress Hormones
Defining Stress: Adaptive Response vs. Chronic State
Physiological Basis of Emotional Contagion and Bonding
Practical Tricks for Building Connection and Trust
Evolutionary Basis of Menstrual and Stress Synchronization
Leadership Stress and Its Impact on Organizations
Mitigating High Cortisol Levels and Sleep Importance
The Glymphatic System and Brain Cleansing During Sleep
Co-sleeping, Oxytocin, and Relationship Bonding
The Looming Mental Health and Spiritual Crisis
Purpose, Nature, and Neuroaesthetics for Well-being
Impact of Modern Society on Connection and Intimacy
Neuroplasticity: Changing the Brain Beyond Age 25
Mechanisms of Neuroplasticity and Brain Growth
Mindset, Language, and the Power of Thoughts
Manifestation Through Brain Science and Personal Responsibility
Neurodiversity and Indigenous Wisdom Insights
8 Key Concepts
Cortisol
Cortisol is the main stress hormone, released by adrenal glands in response to physical, mental, emotional, or spiritual challenges. Chronically high levels of cortisol signal an imminent threat to survival to the brain, causing inflammation throughout the body and leading to issues like heart attacks and stubborn abdominal fat.
Glymphatic System
This is a newly discovered system in the brain, similar to the lymphatic system in the body, responsible for actively flushing out toxins and waste products like tau proteins and amyloid plaques. This cleansing process takes 7-8 hours of sleep to complete, highlighting the critical importance of sufficient sleep for brain health.
Intuition
Intuition is the feeling of knowing something without consciously knowing why, stemming from wisdom and experience stored deep within the nervous system, including the gut neurons. It represents lessons picked up throughout life that are not conscious but are embodied, making it a powerful decision-making modality, especially with age and experience.
Neuroplasticity
Neuroplasticity is the brain's ability to actively grow and change throughout life, even beyond age 25. By engaging in sufficiently intense activities, individuals can improve executive functions, learn new things, and change established habits and behaviors, contrary to the old belief that the brain was fixed after physical growth stopped.
Hebbian Learning
Named after neuroscientist Donald Hebb, this principle states that 'neurons that fire together, wire together.' It explains how frequently repeated thoughts, behaviors, or experiences strengthen neural pathways, making those actions or thought patterns more automatic and deeply embedded in the nervous system.
Neuroaesthetics
Neuroaesthetics, or neuroarts, is a field of research exploring the positive impact of creative activities and aesthetically pleasing experiences on physical health, mental health, and longevity. This includes engaging with dance, music, painting, reading, or simply appreciating nature and beauty in daily life, signaling safety and well-being to the brain.
Intergenerational Epigenetic Trauma
This refers to how external events can change the expression of genes (phenotype) across generations, rather than altering the DNA (genotype) itself. Famous examples include the Holocaust and the Dutch famine, where subsequent generations showed altered stress responses, sometimes leading to increased anxiety or, in some cases, enhanced resilience.
Brain-Derived Neurotrophic Factor (BDNF)
BDNF is a growth factor that helps embryonic nerve cells become fully formed neurons and connect with others, a process called neurogenesis. Aerobic exercise and consuming dark-skinned foods are key contributors to increasing BDNF levels, thereby supporting the growth and connection of new brain cells.
10 Questions Answered
Yes, stress is contagious. The main stress hormone, cortisol, leaks out of sweat and can be absorbed through the skin of others within close proximity, impacting them physiologically. This effect is more pronounced from a leader to their subordinates due to natural hierarchy.
Chronic stress, by elevating cortisol levels, acts as a survival mechanism that encourages the body to store fat around the abdomen, making it particularly difficult to lose. This abdominal fat persists even with increased exercise and dietary changes if the underlying cortisol levels remain high.
The most bonding eye contact is typically when your right eye looks into someone else's left eye, mirroring the natural gaze between a mother and baby. This interaction impacts the amygdala, fostering an emotional resonance loop and increasing levels of the bonding hormone oxytocin.
Sleep is crucial because it's when memories are laid down, emotions are processed, and the body's cells regenerate. Most importantly, the glymphatic system actively cleanses the brain of toxins associated with dementing diseases, a process that requires 7-8 hours of actual sleep.
Yes, sleeping in separate rooms or 'sleep divorce' can erode bonding because co-sleeping, which is fundamental to human survival, promotes physical warmth, skin-to-skin contact, and the release of the bonding hormone oxytocin. This physical and emotional proximity is neuroprotective and encourages trust and love.
Gut instinct is the feeling of knowing something without conscious reasoning, rooted in wisdom and experience stored in the nervous system, including the gut neurons. Over time, learned information and patterns are pushed from the outer cortex into deeper brain regions and the gut, manifesting as an intuitive 'gut feeling'.
Changing habits involves a three-step process: first, raising awareness by identifying the pattern and the underlying belief; second, focused attention by understanding what triggers the behavior and its consequences; and third, deliberate practice of the new desired behavior, with accountability being a crucial fourth factor.
Yes, our thoughts and mindset about aging significantly impact our physical abilities. Studies show that people who psychologically 'relive' being younger can experience physiological improvements like improved posture and coordination, demonstrating the powerful effect of psychological priming on physical aging.
Yes, the language we use, both internally and externally, profoundly matters due to neuroplasticity. Repeating certain words or phrases strengthens associated neural pathways, making the brain believe and act according to those statements. For instance, saying 'I need a coffee' can create a psychological dependency, while 'I'll treat myself to a coffee' asserts choice and power.
To manifest a great relationship, one should first list the desired attributes in a partner, then critically ensure they embody those same qualities themselves. This approach emphasizes personal growth and offering value, as psychologically, people attract partners who are at a similar level of psychological evolution or wound.
27 Actionable Insights
1. Prioritize Sleep for Brain Cleansing
Aim for 7-8 hours of actual sleep (requiring 8-9 hours in bed) to allow the glymphatic system to actively flush out toxins from the brain, crucial for preventing dementing diseases.
2. Manage Stress to Prevent Belly Fat
Chronic stress elevates cortisol, which acts as a survival mechanism to store stubborn fat around the abdomen; reducing cortisol is key to shifting this fat, even if diet and exercise aren’t working.
3. Recognize Stress Contagion
Leaders’ stress levels physiologically impact their teams, as cortisol can leak from sweat and affect others; managing personal stress is crucial for collective well-being in an organization.
4. Practice Deliberate Neuroplasticity
To change stubborn habits, first become aware of the pattern and underlying beliefs, then focus attention on triggers and consequences, and finally, deliberately practice new behaviors in small scenarios.
5. Visualize Goals with Gratitude
Spend five minutes daily visualizing your desired outcomes as already true and feeling gratitude for them; this shifts your brain from a fear state to a trust state, facilitating change.
6. Embrace Neuroplasticity for Growth
Even after age 25, engaging in intense cognitive challenges (like learning a new language) can improve higher brain functions such as emotional regulation, problem-solving, and flexible thinking.
7. Co-Sleep for Bonding and Resilience
Sleeping with a partner fosters bonding, physical warmth, and releases oxytocin, which is neuroprotective and can increase physiological resilience, as measured by heart rate variability.
8. Cultivate Purpose Beyond Self
Having a purpose that transcends personal satisfaction, such as volunteering or helping others without direct personal gain, is crucial for mental health and overall well-being.
9. Integrate Creative Activities Regularly
Regularly engage in creative activities like dance, music, art, reading novels, or spending time in nature at least once a week to positively impact mental health, physical health, and longevity.
10. Curate Your Social Circle
Be mindful of your ’tribe’ because social contagion means you’re more likely to adopt attitudes and behaviors of those around you; seek out people who are growing and open to challenge.
11. Align Values for Relationships
To manifest a great relationship, list desired attributes in a partner, then ensure you embody those same qualities and values yourself, as you attract people at your level of psychological evolution.
12. Be Mindful of Your Language
The words you use, even casually (e.g., ’need’ versus ’treat myself’), can psychologically prime your brain, influencing your behavior and sense of empowerment or disempowerment.
13. Sweat Out Excess Cortisol
Engage in aerobic exercise to physically sweat out excess cortisol from your body, which is an effective way to reduce stress levels.
14. Journal or Talk to Process Stress
Write down or speak aloud your negative thoughts and stressors to get cortisol and associated negative thoughts out of your brain-body system.
15. Learn New Skills for Brain Benefits
Learning a new language or musical instrument can provide ‘global benefits’ to your brain, improving executive functions beyond just the skill itself.
16. Ensure Accountability for Habits
Incorporate external accountability (friends, mentors, action boards) when practicing new behaviors, as it’s easy to give up when the process feels hard.
17. Use Positive Affirmations
Identify recurring negative thoughts related to lack of confidence and create strong, counteracting positive affirmations; repeat these to wear down old neural pathways and build new ones.
18. Engage in Bonding Behaviors
Increase oxytocin by making right-eye-to-left-eye contact, engaging in appropriate physical touch (handshakes, hugs), laughing together, and taking warm baths.
19. Sleep on Your Side for Brain Cleansing
If you wake up at night, turn onto your side (left or right) as it’s the optimal position for the brain’s glymphatic cleansing process.
20. Choose Dark-Skinned Foods
Opt for darker versions of foods (e.g., black beans, blueberries, dark chocolate, purple broccoli) as their pigments contain anthocyanin antioxidants that contribute to neurogenesis (growth of new brain cells).
21. Engage in Gentle Exercise
Prioritize gentle, consistent exercise over high-intensity workouts for neuroplasticity, as excessive high-intensity exercise can spike cortisol levels.
22. Maintain Regular Sleep-Wake Times
Beyond getting enough sleep, maintaining consistent sleep and wake times (within an hour) offers additional, unexplained benefits for brain health.
23. Eat 30 Different Plant Products
Aim to consume 30 different plant products (fruits, vegetables, nuts, seeds, legumes) each week, varying colors, for optimal brain health.
24. Challenge Age-Related Limitations
Do not accept age-related limitations (e.g., needing reading glasses) and actively resist changing behavior to accommodate them; this can improve physical abilities like eyesight and posture.
25. Appreciate Everyday Beauty
Consciously notice and appreciate aesthetically pleasing things in your environment, like the smell of flowers or birdsong, as this signals safety to your brain and is good for health.
26. Consider Time-Restricted Eating
If foundational habits (sleep, diet, exercise, stress management) are solid, time-restricted eating (e.g., 12 noon-8 pm) can regulate blood sugar and offer brain health and longevity benefits.
27. Visualize for Muscle Growth
Visualize yourself lifting weights or performing physical feats, as studies show this can lead to a 13% increase in muscle mass, demonstrating the power of mind over matter.
6 Key Quotes
If you do things that are intense enough to force your brain to change, you will actually improve the highest functions of the brain.
Dr. Tara Swart
Your stress levels as a leader, as a CEO, are going to have more impact on everybody else than the rest of the people put together, basically.
Dr. Tara Swart
The exact things that we see in the pathology of dementing diseases like Alzheimer's and Parkinson's, like tau proteins and amyloid plaques and neurofibrillary tangles, those things are being flushed out of the brain very actively overnight.
Dr. Tara Swart
Intuition is the lessons that you've picked up along the way that you're not conscious of, but they're still stored in your nervous system.
Dr. Tara Swart
We know about generational trauma and intergenerational trauma and epigenetics and how all these bad things can come down the line. But there's also a lot of beauty and wisdom that's there that we can have access to.
Dr. Tara Swart
Essentially what you're doing is moving your brain from a fear state to a trust state. And that is the gateway to making these changes.
Dr. Tara Swart
5 Protocols
Reducing High Cortisol Levels
Dr. Tara Swart- Identify signs and symptoms of high cortisol, such as sleep disruption, belly fat, reflux/indigestion, irritability, mood changes, or dry skin.
- Engage in aerobic exercise to sweat excess cortisol out of the body.
- Practice journaling to write out thoughts and concerns, or speak them aloud to a therapist or trusted friend, to get negative thoughts and cortisol out of the brain-body system.
Enhancing Brain Cleansing During Sleep
Dr. Tara Swart- Aim for 7-8 hours of actual sleep per night to allow the glymphatic system to flush out toxins.
- If awake at night, turn onto your side (left or right) as it's the optimal position for the brain's cleansing process.
Changing Stubborn Habits and Behaviors (Neuroplasticity)
Dr. Tara Swart- Raise awareness: Identify the recurring pattern or behavior you want to change, and dig below the thought to understand the underlying belief about yourself.
- Focused attention: Look for instances in your life (past and present) where this pattern occurs, what triggers it, and the consequences of those decisions.
- Deliberate practice: Set an intention for the new behavior you want to adopt and actively seek scenarios to practice it, understanding it will be challenging initially.
- Accountability: Engage an external source (friend, family, professional, or tangible goal like an action board) to help you stay committed to the new behavior, as self-accountability can be difficult.
Jumpstarting Confidence and Self-Esteem
Dr. Tara Swart- Identify the particular recurring negative thought associated with a lack of confidence.
- Create a positive affirmation that is the opposite or counteracts that negative thought (e.g., 'It doesn't have to be perfect, but it's going to be great' instead of 'It has to be perfect').
- Repeat this positive affirmation strongly and consistently, even if it doesn't feel entirely true at first, to wear down the old neural pathway and build a new one.
Manifesting Desired Outcomes (Brain-Based Approach)
Dr. Tara Swart- Be very clear on what you want (e.g., attributes of a perfect partner).
- Ensure you embody the qualities and values you desire in others, as you attract people at your level of psychological evolution or wound.
- Spend five minutes sitting down and visualizing those desired things being true, fully immersing yourself in the experience (see, feel, taste, hear).
- Give gratitude for those things as if they are already true, shifting your brain from a fear state to a trust state.